$baseRem:10/640;

.section1{background:url(../images/coop/bg1.jpg) no-repeat center top;-webkit-background-size:$baseRem*640rem $baseRem*981rem;height:$baseRem*981rem;text-align: center;
	h3{font-size:$baseRem*38rem;line-height:$baseRem*44rem;padding:$baseRem*65rem 0 $baseRem*50rem;color:#fff;}
	img{width:$baseRem*535rem;height:$baseRem*227rem;}
}

.section2{text-align: center;background:url(../images/coop/bg2.jpg) no-repeat center top;-webkit-background-size:$baseRem*640rem $baseRem*1231rem;height:$baseRem*1207rem;padding-top: $baseRem*24rem;

}
.section2 h3,.section4 h3{
	font-size:$baseRem*46rem;color:#e33200;background:#fff;width:$baseRem*516rem;line-height:$baseRem*90rem;border-radius:$baseRem*90rem;
		margin:0 auto;
}
.section2 p,.section3 p,.section4 p{width:$baseRem*494rem;margin:0 auto;font-size:$baseRem*26rem;color:#fff;line-height: $baseRem*42rem;}
.sec-pic1{width:$baseRem*217rem;height:$baseRem*217rem;margin:$baseRem*50rem 0 $baseRem*48rem;}
.sec-pic2{width:$baseRem*522rem;height:$baseRem*53rem;}
.sec-txt1{padding:$baseRem*20rem 0 $baseRem*40rem 0;}
.sec-pic3{margin-top:0;}

.section3{text-align: center;background:url(../images/coop/bg3.jpg) no-repeat center top;-webkit-background-size:$baseRem*640rem $baseRem*1505rem;height:$baseRem*1485rem;padding-top:$baseRem*20rem; }
.sec3-pic{width:$baseRem*570rem;height:$baseRem*396rem;}
.sec3-pic2{margin-top: 0;}

.section4{background:#ff4600 url(../images/coop/bg4.jpg) no-repeat center top;-webkit-background-size:$baseRem*640rem $baseRem*817rem;text-align: center;padding-top:$baseRem*36rem;}
.section4 h3,.section4 h4{font-size:$baseRem*36rem;}
.section4 h4{color:#fff;line-height: $baseRem*36rem;margin-top:$baseRem*24rem;}

.section4-list1 img,.section4-list2 img,.section4-list3 img,.section4-list5 img{width:$baseRem*204rem;height:$baseRem*204rem;margin:$baseRem*40rem 0 $baseRem*20rem;}
.section4-list4 img{width:$baseRem*297rem;height:$baseRem*204rem;margin:$baseRem*40rem 0 $baseRem*20rem;}
.section4-list6{width:$baseRem*266rem;height:$baseRem*204rem;margin:$baseRem*40rem 0 $baseRem*20rem;}
.section4-list7{width:$baseRem*640rem;height:$baseRem*743rem;}

.c-btn{width:$baseRem*200rem;height:$baseRem*200rem;background:url(../images/coop/btn.png) no-repeat;-webkit-background-size:cover;display: block;margin:0 auto;position: relative;top:-$baseRem*40rem;}